<template>
	<div class="cart">
		<h4>全部商品</h4>
		<div class="cart-main">
			<div class="cart-th">
				<div class="cart-th1">全部</div>
				<div class="cart-th2">商品</div>
				<div class="cart-th3">单价（元）</div>
				<div class="cart-th4">数量</div>
				<div class="cart-th5">小计（元）</div>
				<div class="cart-th6">操作</div>
			</div>
			<div class="cart-body">
				<ul class="cart-list" v-for="(cart,index) in cartInfoList" :key="cart.id">
					<li class="cart-list-con1">
						<input type="checkbox" name="chk_list" :checked="cart.isChecked==1" @change="updateChecked(cart,$event)">
					</li>
					<li class="cart-list-con2">
						<img :src="cart.imgUrl">
						<div class="item-msg">{{cart.skuName}}</div>
					</li>
					<li class="cart-list-con4">
						<span class="price">{{cart.skuPrice}}.00</span>
					</li>
					<li class="cart-list-con5">
						<a href="javascript:void(0)" class="mins" @click="handler('minus',-1,cart)">-</a>
						<input autocomplete="off" type="text" minnum="1" class="itxt" :value="cart.skuNum"
							@change="handler('change',$event.target.value*1,cart)">
						<a href="javascript:void(0)" class="plus" @click="handler('add',1,cart)">+</a>
					</li>
					<li class="cart-list-con6">
						<span class="sum">{{cart.skuPrice * cart.skuNum}}</span>
					</li>
					<li class="cart-list-con7">
						<a class="sindelet" @click="deleteCartById(cart)">删除</a>
						<br>
						<a href="#none">移到收藏</a>
					</li>
				</ul>
			</div>
		</div>
		<div class="cart-tool">
			<div class="select-all">
				<input class="chooseAll" type="checkbox" :checked="isAllCheck&&cartInfoList.length>0" @change="updateAllCartChecked">
				<span>全选</span>
			</div>
			<div class="option">
				<a @click="deleteAllCheckedCart">删除选中的商品</a>
				<a href="#none">移到我的关注</a>
				<a href="#none">清除下柜商品</a>
			</div>
			<div class="money-box">
				<div class="chosed">已选择
					<span>0</span>件商品
				</div>
				<div class="sumprice">
					<em>总价（不含运费） ：</em>
					<i class="summoney">{{totalPrice}}</i>
				</div>
				<div class="sumbtn">
					<!-- <a class="sum-btn" @click="$router.push('/trade')">结算</a> -->
          <router-link class="sum-btn" to="/trade">结算</router-link>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
import {mapGetters} from 'vuex'
import throttle from 'lodash/throttle';
  export default {
    name: 'ShopCart',
    mounted() {
      this.getData();
    },
    methods: {
      //获取个人购物车数据
      getData(){
        this.$store.dispatch('getCartList')
      },
      //修改某产品个数
			handler: throttle(async function(type, disNum, cart) {
				switch (type) {
					case "add":
						disNum = 1;
						break;
					case "minus":
						disNum = cart.skuNum > 1 ? -1 : 0;
						break;
					case "change":
						disNum = (isNaN(disNum) || disNum < 1) ? 0 : parseInt(disNum) - cart.skuNum;
						break;
				}
				// 派发action
				try {
					await this.$store.dispatch('addOrUpdateShopCart', {
						skuId: cart.skuId,
						skuNum: disNum
					});
					this.getData();
				} catch (error) {

				}

			}, 600),
			// 删除某一个产品的操作
			async deleteCartById(cart) {
				try {
					await this.$store.dispatch('deleteCartListBySkuId', cart.skuId);
					this.getData();
				} catch (error) {
					alert(error.message);
				}     
			},
      // 修改某一个产品的勾选状态
			async updateChecked(cart,$event){
				try{
					let isChecked = event.target.checked ? "1" : "0";
					await this.$store.dispatch('updateCheckedById',{skuId:cart.skuId,isChecked})
					this.getData();
				}catch(error){
					alert(error.message);
				}
			},
			// 删除全部选中的产品
			async deleteAllCheckedCart(){
				try{
					await this.$store.dispatch("deleteAllCheckedCart");
					this.getData();
				}catch(error){
					alert(error.message);
				}
			},
			// 修改全部产品的选中状态
			async updateAllCartChecked(event){
				try{
					let isChecked = event.target.checked?'1':'0';
					await this.$store.dispatch("updateAllCartIsChecked",isChecked);
					this.getData();
				}catch(error){
					alert(error.message);
				}
			}
		},
    computed:{
      ...mapGetters(['cartList']),
      cartInfoList(){
        return this.cartList.cartInfoList||[];
      },
      //计算产品总价格
      totalPrice(){
        let sum =0;
        this.cartInfoList.forEach(item=>{
          sum += item.skuNum * item.skuPrice
        });
        return sum;
      },
      //全选逻辑
      isAllCheck(){
        return this.cartInfoList.every(item=>item.isChecked == 1);
      }

    }
  }
</script>

<style lang="less" scoped>
  .cart {
    width: 1200px;
    margin: 0 auto;

    h4 {
      margin: 9px 0;
      font-size: 14px;
      line-height: 21px;
    }

    .cart-main {
      .cart-th {
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 10px;
        overflow: hidden;

        &>div {
          float: left;
        }

        .cart-th1 {
          width: 25%;

          input {
            vertical-align: middle;
          }

          span {
            vertical-align: middle;
          }
        }

        .cart-th2 {
          width: 25%;
        }

        .cart-th3,
        .cart-th4,
        .cart-th5,
        .cart-th6 {
          width: 12.5%;

        }
      }

      .cart-body {
        margin: 15px 0;
        border: 1px solid #ddd;

        .cart-list {
          padding: 10px;
          border-bottom: 1px solid #ddd;
          overflow: hidden;

          &>li {
            float: left;
          }

          .cart-list-con1 {
            width: 15%;
          }

          .cart-list-con2 {
            width: 35%;

            img {
              width: 82px;
              height: 82px;
              float: left;
            }

            .item-msg {
              float: left;
              width: 150px;
              margin: 0 10px;
              line-height: 18px;
            }
          }
          .cart-list-con4 {
            width: 10%;

          }

          .cart-list-con5 {
            width: 17%;

            .mins {
              border: 1px solid #ddd;
              border-right: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }

            input {
              border: 1px solid #ddd;
              width: 40px;
              height: 33px;
              float: left;
              text-align: center;
              font-size: 14px;
            }

            .plus {
              border: 1px solid #ddd;
              border-left: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }
          }

          .cart-list-con6 {
            width: 10%;

            .sum {
              font-size: 16px;
            }
          }

          .cart-list-con7 {
            width: 13%;

            a {
              color: #666;
            }
          }
        }
      }
    }

    .cart-tool {
      overflow: hidden;
      border: 1px solid #ddd;

      .select-all {
        padding: 10px;
        overflow: hidden;
        float: left;

        span {
          vertical-align: middle;
        }

        input {
          vertical-align: middle;
        }
      }

      .option {
        padding: 10px;
        overflow: hidden;
        float: left;

        a {
          float: left;
          padding: 0 10px;
          color: #666;
        }
      }

      .money-box {
        float: right;

        .chosed {
          line-height: 26px;
          float: left;
          padding: 0 10px;
        }

        .sumprice {
          width: 200px;
          line-height: 22px;
          float: left;
          padding: 0 10px;

          .summoney {
            color: #c81623;
            font-size: 16px;
          }
        }

        .sumbtn {
          float: right;

          a {
            display: block;
            position: relative;
            width: 96px;
            height: 52px;
            line-height: 52px;
            color: #fff;
            text-align: center;
            font-size: 18px;
            font-family: "Microsoft YaHei";
            background: #e1251b;
            overflow: hidden;
          }
        }
      }
    }
  }
</style>